diff options
Diffstat (limited to 'lkm/vinum/request.h')
| -rw-r--r-- | lkm/vinum/request.h | 32 |
1 files changed, 32 insertions, 0 deletions
diff --git a/lkm/vinum/request.h b/lkm/vinum/request.h index b4beccc..6575204 100644 --- a/lkm/vinum/request.h +++ b/lkm/vinum/request.h @@ -157,3 +157,35 @@ enum requeststatus { REQUEST_DOWN, /* request failed: subdisk down */ REQUEST_ENOMEM /* ran out of memory */ }; + +#ifdef DEBUG +/* Trace entry for request info (DEBUG_LASTREQS) */ +enum rqinfo_type { + loginfo_unused, /* never been used */ + loginfo_user_bp, /* this is the bp when strategy is called */ + loginfo_user_bpl, /* and this is the bp at launch time */ + loginfo_rqe, /* user RQE */ + loginfo_iodone, /* iodone */ + loginfo_raid5_data, /* write RAID-5 data block */ + loginfo_raid5_parity /* write RAID-5 parity block */ +}; + +union rqinfou { /* info to pass to logrq */ + struct buf *bp; + struct rqelement *rqe; /* address of request, for correlation */ +}; + +struct rqinfo { + enum rqinfo_type type; /* kind of event */ + struct timeval timestamp; /* time it happened */ + struct buf *bp; /* point to user buffer */ + union { + struct buf b; /* yup, the *whole* buffer header */ + struct rqelement rqe; /* and the whole rqe */ + } info; +}; + +#define RQINFO_SIZE 64 /* number of info slots in buffer */ + +void logrq(enum rqinfo_type type, union rqinfou info, struct buf *ubp); +#endif |
